I have an interesting problem. I am using a hosted Exchange 2010 server and have to direct access to its control as this is a shared resource from the hosting provider. I do have access to a web interface for managing my account and all of the mailboxes, distribution lists, etc.
I have now created a few Room Mailboxes (w/mailbox enabled).
When I create a meeting using Outlook 2010 and press the Rooms button and select the room for the meeting I get the Booked Resources Dialog of "The resources for this meeting were successfully booked."
However on the majority of my users' systems, they do not get this dialog. They do, however, get an accepted email from the room in their mailbox. (I do have the automatically decline meetings that conflict and also automatically accept meeting requests..) in the Resource Scheduling settings for the room. (screenshot attached)
I thought that maybe my users had checked the box in the dialog "Do not show this message again" so I checked the PONT_STRING in their registries but there are no values related to Outlook in there.
No idea why some get the dialog while others do not. Can anyone suggest what else I could look at?